The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2002
Filed:
Feb. 12, 1999
Applicant:
Inventors:
Ching T. Young, San Jose, CA (US);
Philip R. Woodruff, Tiffin, OH (US);
Duane L. Schreiner, Fostoria, OH (US);
Harold E. Dunfee, Fostoria, OH (US);
Ralph Frederick, Fostoria, OH (US);
Jeff A. Goldacker, Findlay, OH (US);
Assignee:
AlliedSignal Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T 1/302 ; H01T 1/304 ; H01T 1/322 ; H01B 1/04 ; H01B 1/06 ;
U.S. Cl.
CPC ...
H01T 1/302 ; H01T 1/304 ; H01T 1/322 ; H01B 1/04 ; H01B 1/06 ;
Abstract
A contact glass composition for use in resistor-type spark plugs is described. The contact glass composition is a mixture of: (a) at least one metal; (b) graphite; and (c) silicon. Additionally, borosilicate glass, barium borate glass, magnesium aluminum silicate, ball clay, and aluminum may also be included in the contact glass composition.